股骨大转子至腘横纹的骨度分寸是()
A.13寸
B.14寸
C.16寸
D.18寸
E.19寸
参考答案：E
He had his camera ready ____he saw something that would make a good picture．
A．even if
B．if only
C．in case
D．so that
古时候人们买东西时采用的是物物交换方式，假设交换的标准是20只兔子可以换2只羊，9只羊可以换3口猪，8口猪可以换2头牛，如果一个人用1头牛去换兔子，可以换多少只（）
A．100
B．90
C．120
D．110
